20648407182019 has 2 divisors, whose sum is σ = 20648407182020. Its totient is φ = 20648407182018.

The previous prime is 20648407182017. The next prime is 20648407182083. The reversal of 20648407182019 is 91028170484602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20648407182019 - 2¹ = 20648407182017 is a prime.

It is a super-2 number, since 2×20648407182019² (a number of 27 digits) contains 22 as substring.

Together with 20648407182017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20648407182017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10324203591009 + 10324203591010.

It is an arithmetic number, because the mean of its divisors is an integer number (10324203591010).

Almost surely, 2^{20648407182019} is an apocalyptic number.

20648407182019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20648407182019 is an equidigital number, since it uses as much as digits as its factorization.

20648407182019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 20648407182019 in words is "twenty trillion, six hundred forty-eight billion, four hundred seven million, one hundred eighty-two thousand, nineteen".